There is another thread where there is information on ZL1's being overcharged from the factory. Once a few ounces of 134 are removed, the systems performed much better. (Especially here in AZ). Take your car into the dealer and have them check.

They are not overcharged according to their specs, they just remove 2 ounces as a temp fix. So, either their specs are wrong or I think a more long term fix would be the compressor switch. the coolant removal would be a much cheaper fix and it worked with mine.

Took the car to dealer as I said I would today. The final synopsis for my car was that there is a tech bulletin out out on it. Bulletin stated that a/c system needed to be evacuated and then recharged. The tech stated he found out also that the system was 1 pound low on freon before evac. He noted that the a/c now blows at 45 degrees and cools quickly from the vents.

Well, sounds like the end of this thread...I hope! Hope this may help someone else also! And also as always, thanks for everyone's input!!!

***PLEASE NOTE - This is what was determined for MY VEHICLE - your milage may vary!***

Ticket quote:

"CUSTOMER STATES THAT THE A/C SEEMS TO TAKE A MINUTE OR MORE TO START BLOWING COLD AIR FROM VENTS.
INSPECTED
EVACUATED AND FOUND FREON 1 LB. LOW, RECHARGED WITH 1 LB. FREON. SYSTEM WORKING AS DESIGNED."

Not trying to fire up the "BS" bus and back it over a fellow tech, but where in the heck did a pound of refrigerent go on a new car? The car only takes .54kg of 134a anyhow. Last I checked that is only about 1.2 pounds... (Granted what is usually called a pound is really a can which is only 12 ounces).

With that much gone, the system should have not worked at all. Just my $0.02

Glad it is fixed. Keep an eye on it though as loosing that much 134a is a concern.

I wouldn't say this is a hijack, but I posted about the heat over a year ago even when it's on cool vent during the summer. I always have my vent on regardless of the outside temp and I had to turn the AC on to get cool air on a mild night. Several people posted that the SSs do this too. This car produces a lot of heat. You can see the heat waves coming off the hood insert even during the day.